The United States has criticized an Iranian missile attack on purported militant targets in eastern Syria, calling it “reckless, unsafe and escalatory.”

In a statement sent to VOA on Monday, Pentagon spokesman Cmdr. Sean Robertson said Iran took no measures to notify other military powers operating in Syria of Monday’s predawn missile strike. Unlike Iran, he said, “professional” military forces such as those of the U.S.-led coalition in Syria and of Russia deconflict their operations to ensure maximum safety.

Iran’s Islamic Revolutionary Guard Corps (IRGC) said six missiles launched from the northwestern province of Kermanshah flew over central Iraq and struck targets in the eastern Syrian town of Albu Kamal, near the Iraqi border.

The IRGC said the targeted militants included “takfiris” – a term Iran often uses for Islamic State fighters – and Arab separatists, whom it blames for a Sept. 22 attack on an Iranian military parade in the southwestern city of Ahvaz, an assault that killed at least 24 people.

U.S.-led coalition forces also have been targeting Islamic State (IS) militants in eastern Syria as part of a years long operation to eradicate the group from both Syria and Iraq.

Robertson said the coalition is “more than capable” of defeating, without Iranian help, the remnants of IS in the Euphrates River Valley region that stretches from eastern Syria into western Iraq.

“Given the complex nature of the battle space, such strikes potentially jeopardize the forces who are actively fighting ISIS in Syria,” he said, referring to an acronym for the militant group. “Any Iranian activity in this area is reckless, unsafe and escalatory.”

In a VOA Persian interview, Hudson Institute analyst Michael Pregent said an Iranian missile strike in an area where U.S. forces are operating will be considered as a serious provocation by Washington.

“The United States now has to think about putting air defense assets in Iraq to protect against rogue Iranian missiles that are being launched across Iraq to supposedly target terrorist groups,” Pregent said.

Robertson said no coalition forces were harmed in the Iranian missile attack. But he said the U.S. military still is assessing the strike.

The Pentagon spokesman also criticized the firing of the Iranian missiles over Iraqi airspace. “Firing any missiles through uncoordinated airspace is a threat to civil and military aviation,” Robertson said.

Iran has not said whether it sought Iraq’s permission for the strike. There were no reports of any Iraqi government response to the overflights of the Iranian missiles by late Monday.

Iranian state television broadcast footage of the missiles being launched, along with commentary saying they were a slap in the face toward Iran’s foes, including the U.S., Israel and Saudi Arabia.

However, exiled Iranian defense analyst Babak Taghvaie, a former Iranian air force commander, tweeted that several of the medium-range Qiam missiles used in the strike failed after being launched. He also shared video clips purportedly showing missiles or missile parts falling to the ground and sparking fires in a rural area of Kermanshah.

Two of the Qiam-1 Ballistic missiles failed seconds after their launch and crashed at Sarab-e Yavari village near city of #Kermanshah, however they didn%27t kill any civilian & just destroyed two farms, but they proved that #IRGC%27s ballistic missiles are extremely unreliable. pic.twitter.com/ljP5Ddvu22

Iranian state run news agency Mehr later quoted Kermanshah Governor General Houshang Bazvand as denying that any missiles had failed and crashed into his province.

Monday’s missile strike was the third by Iran on the territory of its neighbors since last year. In June 2017, Iran fired missiles on Islamic State targets in Syria in response to a deadly IS attack on the Iranian parliament and the shrine of Ayatollah Ruhollah Khomeini in Tehran. Last month, Iran also carried out a missile attack on an Iraqi base of an Iranian Kurdish separatist group.

Speaking to VOA Persian, Foundation for Defense of Democracies analyst Behnam Ben Taleblu said Iran has become increasingly emboldened to conduct such operations.

“When Iran fires a ballistic missile from its homeland against a target in a foreign country, this means that Iran is not afraid of the prospects of retaliation, and has probably calculated that it will be safe,” Taleblu said. “So we are going to a point in the Middle East, very quickly, where the threshold for Iran’s use of force is continuing to drop, as the accuracy of Iran’s missiles is continuing to grow.”

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